CN114062609A - Method and device for evaluating temporary plugging effect of temporary plugging agent for blasthole - Google Patents
Method and device for evaluating temporary plugging effect of temporary plugging agent for blasthole Download PDFInfo
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Abstract
The invention provides a method and a device for evaluating temporary plugging effect of a temporary plugging agent for blastholes, wherein the method comprises the following steps: determining the pump speed required by the target perforation section in a laboratory according to the construction parameters of the target perforation section; conveying the temporary plugging agent to be evaluated to the target perforation section according to the pump speed, and measuring experimental data in the conveying process; and evaluating the temporary plugging effect of the temporary plugging agent to be evaluated according to the experimental data. The invention can evaluate the temporary plugging performance of the solid temporary plugging agent under the conditions of different perforation numbers and different perforation modes; according to the Reynolds number similarity criterion, the required pump speed is calculated, and the flow state of the underground pumped fluid and the temporary plugging condition of the temporary plugging agent can be simulated more truly; through quantitative analysis of the temporary plugging effect of the multi-dimensional temporary plugging agent, a basis is provided for performance evaluation and screening of the temporary plugging agent; in addition, the size of the perforation of the perforating section is changed, so that the temporary plugging agent can be used for researching the temporary plugging adaptability of the temporary plugging agent under the high-abrasion condition.
Description
Technical Field
The invention relates to the technical field of oil extraction engineering, in particular to a method and a device for evaluating temporary plugging effect of a temporary plugging agent for blastholes.
Background
In the staged multi-cluster fracturing process of the horizontal well, a soluble bridge plug is generally adopted for mechanical separation, however, balanced fracture initiation is difficult to realize due to large span of perforation clusters in the stage, and at the moment, a temporary plugging agent is needed to block the pressed-open fracture and the pressed-open pressure in the stage, so that the purpose of pressing open a new fracture is realized (see fig. 1). The key to the success of the temporary plugging technology is whether a new crack can be opened, so that the temporary plugging effect of the temporary plugging agent needs to be evaluated, namely the temporary plugging effect is quantified through some evaluation indexes, and the evaluation indexes generally comprise the accessibility, pressure resistance, sealing property and effectiveness of the temporary plugging agent, so as to ensure that the pressure is suppressed during construction, thereby realizing the plugging of old cracks and the cracking of new cracks. Therefore, the quantitative evaluation of the temporary plugging effect of the temporary plugging agent is important.
The temporary plugging agent mainly comprises two main types, namely a liquid temporary plugging agent and a solid temporary plugging agent, wherein the liquid temporary plugging agent is mainly used for realizing the in-seam plugging, the small-particle-size solid temporary plugging agent is used for realizing the in-seam plugging, and the large-particle-size solid temporary plugging agent is used for realizing the temporary plugging of blast holes. Aiming at the liquid temporary plugging agent, a plugging performance evaluation device of the temporary plugging agent is researched and developed by multiple units; aiming at the large-particle-size solid temporary plugging agent, the conventional method is to test the deformation and elongation capacity of the temporary plugging agent, or a rock core holder is adopted, the plugging pressure of the temporary plugging agent is simply tested by a pressure breakthrough method of a rock core flow test, the problem that the difference between the experimental condition and the actual formation condition is too large generally exists, and the actual construction working condition cannot be truly simulated. Besides large-particle-size plugging blasthole simulation equipment, a systematic evaluation method and indexes are also lacked to carry out multi-dimensional quantification on the temporary plugging effect of the temporary plugging agent, so that the type of the temporary plugging agent cannot be selected in a targeted manner.
The invention relates to a patent application No. CN 112229777A-an experimental device and a method for evaluating the temporary plugging effect of a temporary plugging agent in a temporary plugging ball and a fracturing fracture of a perforation blasthole, aiming at evaluating the temporary plugging performance of the temporary plugging agent of a single blasthole, and the method defaults that the temporary plugging agent can enter the blasthole certainly, cannot measure the accessibility of the temporary plugging agent and further cannot measure the effectiveness of the temporary plugging agent.
The invention relates to a patent (application number CN107202866A) -a temporary plugging agent temporary plugging performance evaluation experimental device and a working method and application thereof; the invention patent (application number CN108508151A) -an experimental device for evaluating the plugging performance of a fracturing temporary plugging agent, and a working method and application thereof, all focus on laboratory evaluation, and focus on evaluating temporary plugging in a seam and non-blasthole temporary plugging.
Disclosure of Invention
Aiming at the problems in the prior art, the method and the device for evaluating the temporary plugging effect of the temporary plugging agent for blastholes provided by the invention test the plugging performance of the rope-knot type temporary plugging agent under the conditions of different hole numbers and different perforation modes in a perforation section through experiments, and carry out systematic evaluation on the temporary plugging effect of the temporary plugging agent by using a quantitative evaluation method.
In a first aspect, the present invention provides a method for evaluating temporary plugging effect of a temporary plugging agent for a blasthole, comprising:
determining the pump speed required by the target perforation section in a laboratory according to the construction parameters of the target perforation section;
conveying the temporary plugging agent to be evaluated to the target perforation section according to the pump speed, and measuring experimental data in the conveying process;
and evaluating the temporary plugging effect of the temporary plugging agent to be evaluated according to the experimental data.
In one embodiment, the construction parameters include: casing size, construction displacement, pumped fluid density, and fluid viscosity of the target perforation segment.
In one embodiment, the determining a required pump speed of the target perforated segment in a laboratory according to construction parameters of the target perforated segment includes:
determining the Reynolds number of the fluid in the target well perforation section during construction according to the size of the casing, construction displacement, density of pumped fluid and viscosity of the fluid;
and calculating the pump speed of the target perforation segment in a laboratory according to the Reynolds number of the fluid.
In one embodiment, the delivering the temporary plugging agent to be evaluated into the target perforation segment according to the pump speed and measuring experimental data of the delivery process includes:
delivering the fluid with the transient plugging agent to be assessed into the target perforation segment according to the pump speed;
and measuring the flow break time of the target perforation section in the conveying process, the pressure resistance of the temporary plugging agent, the overflow speed of fluid at the target perforation section and the effectiveness of the temporary plugging agent.
In one embodiment, measuring the effectiveness of the transient blocking agent during delivery comprises:
measuring the number of the temporary plugging agent plugging target perforation section holes;
and determining the effectiveness of the temporary plugging agent according to the number of the holes of the target perforation section plugged by the temporary plugging agent and the using amount of the temporary plugging agent.
In a second aspect, the present invention provides an evaluation device for temporary plugging effect of temporary plugging agent for blastholes, comprising:
the pump speed determining module is used for determining the pump speed required by the target perforation section in a laboratory according to the construction parameters of the target perforation section;
the data measurement module is used for conveying the temporary plugging agent to be evaluated to the target perforation section according to the pump speed and measuring experimental data in the conveying process;
and the effect evaluation module is used for evaluating the temporary plugging effect of the temporary plugging agent to be evaluated according to the experimental data.
In one embodiment, the construction parameters include: casing size, construction displacement, pumped fluid density, and fluid viscosity of the target perforation segment;
the pump speed determination module includes:
the Reynolds number determining unit is used for determining the Reynolds number of the fluid in the pipe during construction of the target well perforation segment according to the size of the casing, the construction displacement, the density of the pumped fluid and the viscosity of the fluid;
and the pump speed determining unit is used for calculating the pump speed of the target perforation segment in a laboratory according to the Reynolds number of the fluid.
In one embodiment, the data measurement module comprises:
a fluid delivery unit for delivering the fluid with the temporary plugging agent to be evaluated into the target perforation segment according to the pump speed;
the parameter measuring unit is used for measuring the flow breaking time of the target perforation section in the conveying process, the pressure resistance of the temporary plugging agent, the overflow speed of fluid at the target perforation section and the effectiveness of the temporary plugging agent;
the parameter measurement unit includes:
the number measuring unit of the plugging holes is used for measuring the number of the holes of the target perforation section plugged by the temporary plugging agent;
and the effectiveness determining unit is used for determining the effectiveness of the temporary plugging agent according to the number of the temporary plugging agent plugging target perforation sections and the using amount of the temporary plugging agent.
In a third aspect, the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method for evaluating the temporary plugging effect of the temporary plugging agent in a blasthole when executing the program.
In a fourth aspect, the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method for evaluating the effect of temporary plugging of a temporary plugging agent for blastholes.
As can be seen from the above description, the method and the device for evaluating the temporary plugging effect of the temporary plugging agent for blastholes provided by the embodiment of the invention firstly determine the pump speed required by the target perforation section in a laboratory according to the construction parameters of the target perforation section; then, conveying the temporary plugging agent to be evaluated to a target perforation section according to the pump speed, and measuring experimental data in the conveying process; and finally, evaluating the temporary plugging effect of the temporary plugging agent to be evaluated according to experimental data. The invention tests the plugging performance of the rope knot type temporary plugging agent under the conditions of different hole numbers and different perforation modes in the perforation section through experiments, and carries out systematic evaluation on the temporary plugging effect of the temporary plugging agent by using a quantitative evaluation method.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a temporary plugging effect of a blasthole temporary plugging agent applied to an actual downhole;
FIG. 2 is a schematic view of a seed flow of a method for evaluating the temporary plugging effect of a temporary plugging agent for blastholes in an embodiment of the present invention;
FIG. 3 is a flow chart illustrating step 100 according to an embodiment of the present invention;
FIG. 4 is a flowchart of step 200 in an embodiment of the present invention;
FIG. 5 is a flowchart illustrating step 202 according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of a temporary plugging effect evaluation system for a temporary plugging agent for blastholes in an embodiment of the present invention;
FIG. 7 is a schematic diagram of a directional perforation pattern in an example embodiment of the present invention;
FIG. 8 is a schematic diagram of a spiral perforation pattern in an embodiment of the present invention;
FIG. 9 is a schematic flow chart showing a method for evaluating temporary plugging effects of a temporary plugging agent for blastholes according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of pressure-time relationship in a temporary plugging performance test according to an embodiment of the present invention;
fig. 11 is a schematic structural view of a temporary plugging effect evaluation device for a temporary plugging agent for blastholes in an embodiment of the invention;
FIG. 12 is a schematic diagram of the structure of the pump speed determination module 10 in an embodiment of the present invention;
FIG. 13 is a schematic structural diagram of a data measurement module 20 according to an embodiment of the present invention;
FIG. 14 is a schematic diagram of a parameter measurement unit 202 according to an embodiment of the present invention;
fig. 15 is a schematic structural diagram of an electronic device in an embodiment of the invention.
Reference numerals:
1: a water tank;
2: a water pump;
3: a pressure sensor;
4: a ball throwing device;
5: a safety valve;
6: a pipeline;
7: a perforation section;
8: a computer control system;
9: a control line;
10: a pressure data transmission line;
11: a video recorder;
12: a video data transmission line;
13: leakage meter.
7001: an inflow section;
7002: a plug;
7003: blastholes (perforation).
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The embodiment of the invention provides a specific implementation mode of a method for evaluating temporary plugging effect of a temporary plugging agent for blastholes, which is shown in fig. 2 and specifically comprises the following steps:
step 100: and determining the pump speed required by the target perforation section in a laboratory according to the construction parameters of the target perforation section.
It can be understood that determining the pump speed in step 100 can more truly simulate the flow state of the pumped fluid downhole and the temporary plugging condition of the temporary plugging agent.
Step 200: and conveying the temporary plugging agent to be evaluated to the target perforation section according to the pump speed, and measuring experimental data in the conveying process.
Under the condition of constant pump speed, along with the increase of the amount of fluid injected into the target perforation section, the pressure of the target perforation section is increased, multi-dimensional parameters are measured in the process, and the temporary plugging effect of the temporary plugging agent is quantitatively analyzed according to the multi-dimensional parameters.
Step 300: and evaluating the temporary plugging effect of the temporary plugging agent to be evaluated according to the experimental data.
In the invention, the temporary plugging effect of the temporary plugging agent is evaluated in four aspects of accessibility, pressure resistance, sealing property and effectiveness.
As can be seen from the above description, the method for evaluating the temporary plugging effect of the temporary plugging agent for blastholes provided by the embodiment of the invention can evaluate the temporary plugging performance of the solid temporary plugging agent under the conditions of different perforation numbers and different perforation modes; according to the Reynolds number similarity criterion, the required pump speed is calculated, and the flow state of the underground pumped fluid and the temporary plugging condition of the temporary plugging agent can be simulated more truly; through quantitative analysis of the temporary plugging effect of the multi-dimensional temporary plugging agent, a basis is provided for performance evaluation and screening of the temporary plugging agent; in addition, the size of the perforation of the perforating section is changed, so that the temporary plugging agent can be used for researching the temporary plugging adaptability of the temporary plugging agent under the high-abrasion condition.
In one embodiment, the construction parameters include: casing size, construction displacement, pumped fluid density, and fluid viscosity of the target perforation segment.
In one embodiment, referring to fig. 3, step 100 comprises:
step 101: determining the Reynolds number of the fluid in the target well perforation section during construction according to the size of the casing, construction displacement, density of pumped fluid and viscosity of the fluid;
reynolds number is a dimensionless number that can be used to characterize fluid flow conditions. Where v, ρ, and μ are the flow velocity, density, and viscosity coefficient of the fluid, respectively, and d is a characteristic length. E.g., fluid flowing through a circular pipe, then d is the equivalent diameter of the pipe. The reynolds number can be used to distinguish whether the flow of the fluid is laminar or turbulent and can also be used to determine the resistance to flow of the object in the fluid.
When the step 101 is implemented, the method specifically comprises the following steps: the Reynolds number of the fluid in the circular tube is calculated by the formula:
wherein Re is Reynolds number and is dimensionless; rho is the fluid density, kg/m3(ii) a v is the flow velocity of the fluid in the pipe, m/s; dHHydrodynamic diameter, m; μ is the fluid viscosity, pas; q is pump displacement, m3S; a is the inner cross-sectional area of the tube, m2。
Step 102: and calculating the pump speed of the target perforation segment in a laboratory according to the Reynolds number of the fluid.
Based on the results of step 101, the Reynolds number of the fluid is maintained equal under the experimental conditions and the actual construction conditions, i.e.
ReFruit of Chinese wolfberry＝ReApplying (a) to
In summary, the pumping capacity required by the experiment can be obtained as
In one embodiment, referring to fig. 4, step 200 comprises:
step 201: delivering the fluid with the transient plugging agent to be assessed into the target perforation segment according to the pump speed;
step 202: and measuring the flow break time of the target perforation section in the conveying process, the pressure resistance of the temporary plugging agent, the overflow speed of fluid at the target perforation section and the effectiveness of the temporary plugging agent.
In step 201 and step 202, the accessibility index is that in a single-hole experiment, the accessibility of the temporary plugging agent is represented by the time of the flow breaking of the hole flow, and the faster the flow breaking occurs, the better the accessibility of the temporary plugging agent is represented.
The pressure resistance index is that in a single-hole experiment, the pressure resistance of the temporary plugging agent is represented by the pressure in the casing at high-speed discharge, and the higher the pressure is, the better the pressure resistance of the temporary plugging agent is represented.
The sealing performance index is that in a single-hole experiment, the liquid overflow speed at the position of an eyelet under high-speed discharge represents the sealing performance of the temporary plugging agent, and the slower the overflow speed is, the better the sealing performance of the temporary plugging agent is represented.
In one embodiment, referring to FIG. 5, step 202 comprises:
step 2021: measuring the number of the temporary plugging agent plugging target perforation section holes;
step 2022: and determining the effectiveness of the temporary plugging agent according to the number of the holes of the target perforation section plugged by the temporary plugging agent and the using amount of the temporary plugging agent.
In step 2021 and step 2022, the effectiveness index is that in the porous experiment, the effectiveness of the temporary plugging agent is represented by a ratio of the temporary plugging agent usage amount to the actual plugging hole number at a high-speed discharge rate, and the larger the ratio is, the better the effectiveness of the temporary plugging agent is represented, and the calculation formula is as follows:
wherein eta is the effectiveness of the temporary plugging agent,%; n isBy usingThe dosage of the temporary plugging agent is one; n isSealing deviceThe number of the holes to be actually plugged is several.
In order to further explain the scheme, the invention provides a specific application example of the method for evaluating the temporary plugging effect of the temporary plugging agent for blastholes by taking a K block as an example, and the specific application example specifically comprises the following contents.
Referring to fig. 6, the embodiment of the present invention further provides a system for evaluating temporary plugging effect of a temporary plugging agent for blastholes, which includes: the water tank 1, the water pump 2, the pressure sensor 3, the ball throwing device 4, the safety valve 5, the pipeline 6, the perforation section 7, the computer control system 8, the control pipeline 9, the pressure data transmission line 10, the video recorder 11, the video data transmission line 12 and the leakage loss measuring instrument 13, wherein the perforation section 7 comprises an inflow end 7001, a plug 7002 and a blast hole 7003. Water tank 1, water pump 2, relief valve 5 and perforation section 7 pass through pipeline 6 and are connected, and computer control system 8 passes through control pipeline 9 and is connected with water pump 2, and computer control system 8 passes through pressure data transmission line 10 and is connected with pressure sensor 3, and computer control system 8 is connected with video recorder 11 through video recording data transmission line 12, wherein:
the water tank 1 is used to hold various types of pumped fluids for carrying the diverting agent.
The water pump 2 pumps clean water to subsequent devices and continues to provide pressure after plugging.
The pressure sensor 3 records the pressure change in the device, and the pressure data of the pressure change is used as the temporary plugging effect evaluation index.
The ball throwing device 4 is used for throwing the temporary plugging agent into the pipeline and ensuring that the upper valve and the lower valve are closed before an experiment; during preparation, the upper valve is opened to enable the temporary plugging agent to enter a closed space between the upper valve and the lower valve, and the upper valve is closed; when the ball is thrown, the lower valve is opened, and the temporary plugging agent is pumped to the perforation section 7 by the pumping fluid.
The safety valve 5 can set critical pressure, when the pressure in the pipe exceeds the critical pressure, the pressure can be quickly relieved, the safe operation of equipment is ensured, and the critical pressure is set to be 10-20 MPa according to the requirement.
The perforation section 7 has two modes of directional perforation and spiral perforation, and is used for testing the temporary plugging effect of the temporary plugging agent under different perforation modes, and the temporary plugging agent is shown in fig. 7 and fig. 8.
One end of the perforation section 7 can be freely lifted and lowered, and can be used for simulating different well types such as a vertical well, a horizontal well, an inclined well and the like.
The diameter and the shape of the blasthole 7003 can be designed according to actual requirements so as to simulate the adaptability of temporary plugging of the temporary plugging agent under high-abrasion conditions.
The number of the blastholes 7003 can be designed according to actual requirements, and the blastholes 7003 can be opened and closed according to requirements, so that the method is used for testing the accessibility, pressure resistance and sealing property of the temporary plugging agent under the condition of a single hole and also can be used for testing the effectiveness of the temporary plugging agent under the condition of multiple holes.
The blasthole 7003 can also be partially provided with a rupture disk, when a part of the blasthole 7003 is blocked by the temporary plugging agent, the pressure in the perforating section rises, and when the opening pressure of the rupture disk is reached, the blasthole 7003 provided with the rupture disk is opened, so that the experimental effect of blocking old seams and pressing open new seams is realized.
The critical pressure of the rupture disk is generally set to 3-5 MPa.
The computer control system 8 can control the discharge capacity of the water pump 2 through a control pipeline 9, can record the pressure data of the pressure sensor 3 through a pressure data transmission line, and can record the image data of the video recorder 11 through a video data transmission line 12.
The leakage measuring instrument 13 is used for recording the liquid amount leaked from the blasthole after the blasthole is blocked by the temporary plugging agent.
Referring to fig. 9, based on the system for evaluating the temporary plugging effect of the temporary plugging agent for blastholes, the method for evaluating the temporary plugging effect of the temporary plugging agent for blastholes provided by the specific application example of the present invention includes:
s1, determining a test purpose of a temporary plugging agent;
s2, selecting a pumped fluid according to the purpose of the experiment, selecting the type of the perforation section 7, adjusting the number of the perforations of the perforation section 7, putting the temporary plugging agent into the ball throwing device 4, connecting pipelines and ensuring that all connection parts of the whole experiment device are well sealed;
s3, opening the computer control system 8, opening the pressure sensor 3 to start recording pressure data, and opening the video recorder 11 to start recording image data;
s4, calculating the required pump speed according to the Reynolds number similarity criterion, opening the water pump 2, opening a lower valve of the ball throwing device 4 after the pumping fluid is sprayed out of the perforation section 7, and carrying the temporary plugging agent to the perforation section 7 by the pumping fluid;
s5, observing and recording the pressure change of the pressure sensor 3, and recording the liquid leakage condition of the perforation section 7 through a leakage measuring instrument 13;
s6, after the critical pressure is reached, the safety valve 4 releases the pressure, the water pump 2 is closed, and the data are recorded and sorted;
s7, quantitatively evaluating the temporary plugging performance through four evaluation indexes of accessibility, pressure resistance, sealing performance, effectiveness and the like;
the accessibility index is that in a single-hole experiment, the accessibility of the temporary plugging agent is represented by the time of the flow of the hole with the flow cutoff, and the faster the flow cutoff occurs, the better the accessibility of the temporary plugging agent is represented.
The pressure resistance index is that in a single-hole experiment, the pressure resistance of the temporary plugging agent is represented by the pressure in the casing at high-speed discharge, and the higher the pressure is, the better the pressure resistance of the temporary plugging agent is represented.
The sealing performance index is that in a single-hole experiment, the liquid overflow speed at the position of an eyelet under high-speed discharge represents the sealing performance of the temporary plugging agent, and the slower the overflow speed is, the better the sealing performance of the temporary plugging agent is represented.
The effectiveness index is that in a porous experiment, the effectiveness of the temporary plugging agent is represented by the ratio of the temporary plugging agent dosage under high-speed discharge to the actual plugging hole number, the greater the ratio is, the better the effectiveness of the temporary plugging agent is represented, and the calculation formula is as follows:
wherein eta is the effectiveness of the temporary plugging agent,%; n isBy usingThe dosage of the temporary plugging agent is one; n isSealing deviceThe number of the holes to be actually plugged is several.
And S8, changing the type of the temporary plugging agent, and testing and comparing the temporary plugging performance of different temporary plugging agents.
The present invention provides the following three embodiments according to the above method:
example 1:
s11: determining the test purpose to evaluate the accessibility, pressure resistance and sealing performance of the pattern-temporary plugging agent;
s12: to evaluate the accessibility, pressure resistance and sealing of the model-temporary plugging agent, clear water (density 1000 kg/m) was chosen3Viscosity of 1mPa · s) as a pumping fluid, selecting a perforation section 7 with a spiral perforation of five inches and a half (the inner diameter of the pipe is about 0.121m) as shown in fig. 8, adjusting the number of the perforations of the perforation section 7 to be 1, putting 1 pattern of temporary plugging agent into a ball throwing device 4, connecting the pipelines according to fig. 6, and ensuring that all connection parts of the whole experimental device are sealed completely;
s13: opening the computer control system 8, opening the pressure sensor 3 to start recording pressure data, and opening the video recorder 11 to start recording image data;
s14: assuming that the field perforation section is a sleeve with five-inch semi-spiral perforation and the construction displacement is 4m3Min, density of pumped fluid 1000kg/m3And the fluid viscosity is 20mPa & s, the Reynolds number of the fluid in the pipe during construction is as follows:
the required pump speed for the experiment was calculated as:
then, the water pump 2 is started, after the pumping fluid is sprayed out of the perforation section 7, the lower valve of the ball throwing device 4 is opened, and the pumping fluid carries the temporary plugging agent to the perforation section 7;
s15: observing and recording the pressure change of the pressure sensor 3, and recording the liquid leakage condition of the perforation section 7 by a leakage measuring instrument 13;
s16: after a period of time, the temporary plugging agent plugs the perforation blastholes, the water outlet at the perforation is reduced, the reading of the pressure sensor 3 is increased, the safety valve 4 releases the pressure after the critical pressure reaches 14.1MPa, the water pump 2 is closed, and the data are recorded and collated, as shown in figure 10;
s17: the temporary plugging performance is quantitatively evaluated through three evaluation indexes of accessibility, pressure resistance and sealing performance; the flow of the holes starts to be cut off within 45s after the experiment starts, which shows that the temporary plugging agent has good accessibility; the pressure of at least 14.1MPa can be born, which shows that the pressure resistance of the temporary plugging agent is good; according to the record of the leakage meter 13, the liquid overflow speed at the hole position after plugging is displayed to be slow, which indicates that the temporary plugging agent has good sealing performance.
Example 2:
s21: determining the testing purpose to evaluate the temporary plugging effectiveness of the temporary plugging agent;
s22: to evaluate the effectiveness of temporary plugging of a temporary plugging agent in a model, clear water (density 1000 kg/m) was selected3Viscosity of 1mPa · s) as a pumping fluid, selecting a perforation section 7 with a spiral perforation of five inches and a half (the inner diameter of the pipe is about 0.121m) in diameter as shown in fig. 8, adjusting the number of the perforations of the perforation section 7 to be 4, putting 4 patterns of temporary plugging agents into a ball throwing device 4, connecting pipelines according to fig. 6, and ensuring that all connection parts of the whole experimental device are sealed completely;
s23: opening the computer control system 8, opening the pressure sensor 3 to start recording pressure data, and opening the video recorder 11 to start recording image data;
s24: according to the Reynolds number similarity criterion, the required pump speed is calculated to be 0.2m3Min, the water pump 2 is started, after the pumping fluid is sprayed out of the perforation section 7, the lower valve of the ball throwing device 4 is opened, and the pumping fluid is used for carrying the temporary plugging agent to the perforation section 7;
s25: observing and recording the pressure change of the pressure sensor 3, and recording the liquid leakage condition of the perforation section 7 by a leakage measuring instrument 13;
s26: after a period of time, the temporary plugging agent plugs the perforation blastholes, the water outlet of part of the perforation is reduced or is not reduced, the reading of the pressure sensor 3 is increased, the safety valve 4 releases the pressure after the critical pressure is reached, the water pump 2 is closed, and the finishing data is recorded;
s27: experimental results show that water is completely stopped from discharging from 4 perforating blastholes with different angles, effective plugging is realized, the effectiveness is calculated to be 100% according to an effectiveness calculation formula, and the plugging effectiveness of the temporary plugging agent on the spiral perforation is good.
Example 3:
the temporary plugging effects of the temporary plugging agents of the second and third patterns shown in table 1 were evaluated by the same evaluation methods as in examples 1 and 2, and the evaluation results are shown in table 1. As can be seen from Table 1, the temporary plugging agent of the first and second patterns is superior to the temporary plugging agent of the third pattern in terms of accessibility, and the temporary plugging agent can enter the blasthole within 50 s; in terms of pressure resistance, the temporary plugging agent of the pattern I and the pattern II is superior to that of the pattern III, and the pressure resistance is more than 10 MPa; in terms of sealing performance, the temporary plugging agent leakage amount of the pattern one and the pattern two is small, and the sealing performance is superior to that of the pattern three; in terms of effectiveness, the efficiency of pattern one is better than that of pattern two and pattern three, and the efficiency is 100%. Comprehensive evaluation shows that the temporary plugging effect of the temporary plugging agent in the first mode is the best, and the temporary plugging agent in the first mode is preferably used as the temporary plugging agent for field construction.
TABLE 1 results of evaluation of temporary plugging effect of each type of temporary plugging agent
| Knot pattern | Accessibility | Pressure resistance | Sealing property | Effectiveness of |
| Style one | 45s | 14.1MPa | 12ml/ |
100％ |
| Type two | 28s | 11.0MPa | 8ml/min | 75％ |
| Style three | 180s | 4.26MPa | 78ml/min | 25％ |
As can be seen from the above description, in the method for evaluating the temporary plugging effect of the temporary plugging agent for blastholes provided by the embodiment of the present invention, firstly, the pump speed required by the target perforation section in a laboratory is determined according to the construction parameters of the target perforation section; then, conveying the temporary plugging agent to be evaluated to the target perforation section according to the pump speed, and measuring experimental data in the conveying process; and finally, evaluating the temporary plugging effect of the temporary plugging agent to be evaluated according to the experimental data. The invention can evaluate the temporary plugging performance of the solid temporary plugging agent under the conditions of different perforation numbers and different perforation modes; according to the Reynolds number similarity criterion, the required pump speed is calculated, and the flow state of the underground pumped fluid and the temporary plugging condition of the temporary plugging agent can be simulated more truly; through quantitative analysis of the temporary plugging effect of the multi-dimensional temporary plugging agent, a basis is provided for performance evaluation and screening of the temporary plugging agent; in addition, the size of the perforation of the perforating section is changed, so that the temporary plugging agent can be used for researching the temporary plugging adaptability of the temporary plugging agent under the high-abrasion condition.
Based on the same inventive concept, the embodiment of the present application further provides a device for evaluating the temporary plugging effect of the temporary plugging agent for blastholes, which can be used for implementing the method described in the above embodiment, such as the following embodiments. The principle of the device for evaluating the temporary plugging effect of the temporary plugging agent in the blasthole is similar to that of the method for evaluating the temporary plugging effect of the temporary plugging agent in the blasthole, so the implementation of the device for evaluating the temporary plugging effect of the temporary plugging agent in the blasthole can be referred to that of the method for evaluating the temporary plugging effect of the temporary plugging agent in the blasthole, and repeated parts are not repeated. As used hereinafter, the term "unit" or "module" may be a combination of software and/or hardware that implements a predetermined function. While the system described in the embodiments below is preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.
The embodiment of the present invention provides a specific implementation manner of a temporary plugging effect evaluation device for a temporary plugging agent for blastholes, which can implement the temporary plugging effect evaluation method for the temporary plugging agent for blastholes, and referring to fig. 11, the temporary plugging effect evaluation device for blastholes specifically includes the following contents:
the pump speed determining module 10 is used for determining the pump speed required by the target perforation section in a laboratory according to the construction parameters of the target perforation section;
the data measurement module 20 is used for conveying the temporary plugging agent to be evaluated to the target perforation section according to the pump speed and measuring experimental data in the conveying process;
and the effect evaluation module 30 is used for evaluating the temporary plugging effect of the temporary plugging agent to be evaluated according to the experimental data.
In one embodiment, the construction parameters include: casing size, construction displacement, pumped fluid density, and fluid viscosity of the target perforation segment;
referring to fig. 12, the pump speed determination module 10 includes:
the Reynolds number determining unit 101 is used for determining the Reynolds number of the fluid in the pipe during construction of the target well perforation segment according to the size of the casing, construction displacement, density of pumped fluid and viscosity of the fluid;
and the pump speed determining unit 102 is used for calculating the pump speed of the target perforation segment in a laboratory according to the Reynolds number of the fluid.
In one embodiment, referring to fig. 13, the data measurement module 20 includes:
a fluid delivery unit 201 for delivering the fluid with the temporary plugging agent to be evaluated into the target perforation segment according to the pump speed;
the parameter measuring unit 202 is used for measuring the flow breaking time of the target perforation section in the conveying process, the pressure resistance of the temporary plugging agent, the overflow speed of fluid at the target perforation section and the effectiveness of the temporary plugging agent;
referring to fig. 14, the parameter measurement unit 202 includes:
the plugging hole number measuring unit 2021 is used for measuring the number of holes of the temporary plugging agent plugging target perforation section;
the effectiveness determining unit 2022 is configured to determine the effectiveness of the temporary plugging agent according to the number of the temporary plugging agent plugging target perforation segments and the usage amount of the temporary plugging agent.
As can be seen from the above description, in the device for evaluating the temporary plugging effect of the temporary plugging agent for blastholes provided by the embodiment of the present invention, firstly, the pump speed required by the target perforation section in a laboratory is determined according to the construction parameters of the target perforation section; then, conveying the temporary plugging agent to be evaluated to the target perforation section according to the pump speed, and measuring experimental data in the conveying process; and finally, evaluating the temporary plugging effect of the temporary plugging agent to be evaluated according to the experimental data. The invention can evaluate the temporary plugging performance of the solid temporary plugging agent under the conditions of different perforation numbers and different perforation modes; according to the Reynolds number similarity criterion, the required pump speed is calculated, and the flow state of the underground pumped fluid and the temporary plugging condition of the temporary plugging agent can be simulated more truly; through quantitative analysis of the temporary plugging effect of the multi-dimensional temporary plugging agent, a basis is provided for performance evaluation and screening of the temporary plugging agent; in addition, the size of the perforation of the perforating section is changed, so that the temporary plugging agent can be used for researching the temporary plugging adaptability of the temporary plugging agent under the high-abrasion condition.
The apparatuses, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or implemented by a product with certain functions. A typical implementation device is an electronic device, which may be, for example, a personal computer, a laptop computer, a cellular telephone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.
In a typical example, the electronic device specifically includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and the processor executes the computer program to implement the steps of the method for evaluating the temporary plugging effect of the temporary plugging agent for blastholes, the steps including:
step 100: determining the pump speed required by the target perforation section in a laboratory according to the construction parameters of the target perforation section;
step 200: conveying the temporary plugging agent to be evaluated to the target perforation section according to the pump speed, and measuring experimental data in the conveying process;
step 300: and evaluating the temporary plugging effect of the temporary plugging agent to be evaluated according to the experimental data.
Referring now to FIG. 15, shown is a schematic diagram of an electronic device 600 suitable for use in implementing embodiments of the present application.
As shown in fig. 15, the electronic apparatus 600 includes a Central Processing Unit (CPU)601 that can perform various appropriate works and processes according to a program stored in a Read Only Memory (ROM)602 or a program loaded from a storage section 608 into a Random Access Memory (RAM)) 603. In the RAM603, various programs and data necessary for the operation of the system 600 are also stored. The CPU601, ROM602, and RAM603 are connected to each other via a bus 604. An input/output (I/O) interface 605 is also connected to bus 604.
The following components are connected to the I/O interface 605: an input portion 606 including a keyboard, a mouse, and the like; an output portion 607 including a display such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker; a storage section 608 including a hard disk and the like; and a communication section 609 including a network interface card such as a LAN card, a modem, or the like. The communication section 609 performs communication processing via a network such as the internet. The driver 610 is also connected to the I/O interface 605 as needed. A removable medium 611 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 610 as necessary, so that a computer program read out therefrom is mounted as necessary on the storage section 608.
In particular, according to an embodiment of the present invention, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, an embodiment of the present invention includes a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the above-described blast hole temporary plugging agent temporary plugging effect evaluation method, the steps including:
step 100: determining the pump speed required by the target perforation section in a laboratory according to the construction parameters of the target perforation section;
step 200: conveying the temporary plugging agent to be evaluated to the target perforation section according to the pump speed, and measuring experimental data in the conveying process;
step 300: and evaluating the temporary plugging effect of the temporary plugging agent to be evaluated according to the experimental data.
In such an embodiment, the computer program may be downloaded and installed from a network through the communication section 609, and/or installed from the removable medium 611.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functionality of the units may be implemented in one or more software and/or hardware when implementing the present application.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A method for evaluating the temporary plugging effect of a temporary plugging agent for blastholes is characterized by comprising the following steps:
determining the pump speed required by the target perforation section in a laboratory according to the construction parameters of the target perforation section;
conveying the temporary plugging agent to be evaluated to the target perforation section according to the pump speed, and measuring experimental data in the conveying process;
and evaluating the temporary plugging effect of the temporary plugging agent to be evaluated according to the experimental data.
2. The method for evaluating the temporary plugging effect of a temporary plugging agent for blastholes according to claim 1, wherein the construction parameters comprise: casing size, construction displacement, pumped fluid density, and fluid viscosity of the target perforation segment.
3. The method for evaluating the temporary plugging effect of a temporary plugging agent for a blasthole according to claim 2, wherein the step of determining the pump speed required by the target perforation section in a laboratory according to the construction parameters of the target perforation section comprises the following steps:
determining the Reynolds number of the fluid in the target well perforation section during construction according to the size of the casing, construction displacement, density of pumped fluid and viscosity of the fluid;
and calculating the pump speed of the target perforation segment in a laboratory according to the Reynolds number of the fluid.
4. The method for evaluating the temporary plugging effect of a temporary plugging agent for a blasthole according to claim 1, wherein the steps of delivering the temporary plugging agent to be evaluated into the target blasthole section according to the pump speed and measuring experimental data of a delivery process comprise:
delivering the fluid with the transient plugging agent to be assessed into the target perforation segment according to the pump speed;
and measuring the flow break time of the target perforation section in the conveying process, the pressure resistance of the temporary plugging agent, the overflow speed of fluid at the target perforation section and the effectiveness of the temporary plugging agent.
5. The method for evaluating the temporary plugging effect of a temporary plugging agent for blastholes according to claim 4, wherein measuring the effectiveness of the temporary plugging agent during transportation comprises:
measuring the number of the temporary plugging agent plugging target perforation section holes;
and determining the effectiveness of the temporary plugging agent according to the number of the holes of the target perforation section plugged by the temporary plugging agent and the using amount of the temporary plugging agent.
6. The utility model provides a device is appraised to stifled effect of temporary plugging of porthole temporary plugging agent, its characterized in that includes:
the pump speed determining module is used for determining the pump speed required by the target perforation section in a laboratory according to the construction parameters of the target perforation section;
the data measurement module is used for conveying the temporary plugging agent to be evaluated to the target perforation section according to the pump speed and measuring experimental data in the conveying process;
and the effect evaluation module is used for evaluating the temporary plugging effect of the temporary plugging agent to be evaluated according to the experimental data.
7. The evaluation device for temporary plugging effect of temporary plugging agent for blastholes according to claim 6, wherein said construction parameters include: casing size, construction displacement, pumped fluid density, and fluid viscosity of the target perforation segment;
the pump speed determination module includes:
the Reynolds number determining unit is used for determining the Reynolds number of the fluid in the pipe during construction of the target well perforation segment according to the size of the casing, the construction displacement, the density of the pumped fluid and the viscosity of the fluid;
and the pump speed determining unit is used for calculating the pump speed of the target perforation segment in a laboratory according to the Reynolds number of the fluid.
8. The apparatus for evaluating the temporary plugging effect of a blasthole temporary plugging agent according to claim 6, wherein said data measuring module comprises:
a fluid delivery unit for delivering the fluid with the temporary plugging agent to be evaluated into the target perforation segment according to the pump speed;
the parameter measuring unit is used for measuring the flow breaking time of the target perforation section in the conveying process, the pressure resistance of the temporary plugging agent, the overflow speed of fluid at the target perforation section and the effectiveness of the temporary plugging agent;
the parameter measurement unit includes:
the number measuring unit of the plugging holes is used for measuring the number of the holes of the target perforation section plugged by the temporary plugging agent;
and the effectiveness determining unit is used for determining the effectiveness of the temporary plugging agent according to the number of the temporary plugging agent plugging target perforation sections and the using amount of the temporary plugging agent.
9. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the method for evaluating the effect of transient occlusion of a blasthole transient occlusion agent according to any one of claims 1 to 5 when executing the program.
10. A computer-readable storage medium on which a computer program is stored, the computer program, when being executed by a processor, implementing the steps of the assessment method for temporary plugging effect of transient plugging agents for blastholes according to any one of claims 1 to 5.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170189654A1 (en) * | 2016-01-04 | 2017-07-06 | ReFlow Therapeutics AG | System and methods for treating mvo |
| CN107476776A (en) * | 2017-07-21 | 2017-12-15 | 中国石油天然气股份有限公司 | Experimental method for plugging performance of temporary plugging agent for fracturing |
| CN108508151A (en) * | 2018-04-02 | 2018-09-07 | 中国石油大学(华东) | A kind of pressure break diverting agent sealing characteristics evaluation experimental device and its working method and application |
| CN110242247A (en) * | 2019-05-21 | 2019-09-17 | 中国石油天然气股份有限公司 | Temporary plugging method and temporary plugging agent for lifting and lowering pipe column construction of water injection well |
| CN112253074A (en) * | 2019-07-22 | 2021-01-22 | 中国石油化工股份有限公司 | Method for improving bridge plug pumping efficiency by deep horizontal well fracturing |
| CN113236240A (en) * | 2021-05-27 | 2021-08-10 | 新疆正通石油天然气股份有限公司 | High-temperature temporary blocking steering indoor true triaxial physical model experiment equipment and method |
| US20210334434A1 (en) * | 2020-04-24 | 2021-10-28 | Southwest Petroleum University | Optimization method for dense cutting, temporary plugging and fracturing in shale horizontal well stage |
| CN113640473A (en) * | 2021-09-07 | 2021-11-12 | 中石化石油工程技术服务有限公司 | Plugging capacity test experimental device and method for drilling and fracturing |
-
2021
- 2021-11-16 CN CN202111352366.1A patent/CN114062609A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170189654A1 (en) * | 2016-01-04 | 2017-07-06 | ReFlow Therapeutics AG | System and methods for treating mvo |
| CN107476776A (en) * | 2017-07-21 | 2017-12-15 | 中国石油天然气股份有限公司 | Experimental method for plugging performance of temporary plugging agent for fracturing |
| CN108508151A (en) * | 2018-04-02 | 2018-09-07 | 中国石油大学(华东) | A kind of pressure break diverting agent sealing characteristics evaluation experimental device and its working method and application |
| CN110242247A (en) * | 2019-05-21 | 2019-09-17 | 中国石油天然气股份有限公司 | Temporary plugging method and temporary plugging agent for lifting and lowering pipe column construction of water injection well |
| CN112253074A (en) * | 2019-07-22 | 2021-01-22 | 中国石油化工股份有限公司 | Method for improving bridge plug pumping efficiency by deep horizontal well fracturing |
| US20210334434A1 (en) * | 2020-04-24 | 2021-10-28 | Southwest Petroleum University | Optimization method for dense cutting, temporary plugging and fracturing in shale horizontal well stage |
| CN113236240A (en) * | 2021-05-27 | 2021-08-10 | 新疆正通石油天然气股份有限公司 | High-temperature temporary blocking steering indoor true triaxial physical model experiment equipment and method |
| CN113640473A (en) * | 2021-09-07 | 2021-11-12 | 中石化石油工程技术服务有限公司 | Plugging capacity test experimental device and method for drilling and fracturing |
Non-Patent Citations (2)
| Title |
|---|
| 菲利普•E.纳尔逊: "《无菌加工与包装原理 第3版》", 30 April 2021, 天津大学出版社, pages: 25 * |
| 龚险峰等: "低渗油藏纳米粉体堵剂性能评价及应用", 《石油钻采工艺》, vol. 37, no. 05, 30 September 2015 (2015-09-30), pages 104 - 108 * |
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